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A standard type mouth gag to which an ether tube and lip retractors have been attached has proved useful to the tonsillectomist and the anesthetist. The ether tube attachment is flexible and out of the way of the operator (fig. 2). It needs little attention by the anesthetist and directs the ether vapor into the pharynx whether the patient's jaws are open or closed. The lip retractors prevent the lips from becoming pinched between the teeth and the metal jaws of the mouth gag.
A description of the attachments follows: One end of a flexible copper tube (fig. 1 A) which has been brazed to the under surface of the upper jaw of the mouth gag, is hubbed for the ether hose attachment, while the other end points toward the pharynx when the mouth gag is inserted between the teeth (fig. 2). The lip retractors are rigid metal strips brazed
SAMUEL PELUSE. ETHER TUBE AND LIP RETRACTOR ATTACHMENTS FOR MOUTH GAG. Arch Otolaryngol. 1940;32(1):121–122. doi:10.1001/archotol.1940.00660020122006